期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2013
卷号：2013
DOI：10.1155/2013/460164
出版社：Hindawi Publishing Corporation
摘要：Recently, vehicular sensor networks (VSNs) have emerged as a new intelligent transport networking
paradigm in the Internet of Things. By sensing, collecting, and delivering traffic-related information,
VSNs can significantly improve both driving experience and traffic flow control, especially in constrained
urban environments. Latest technological advances enable vehicular devices to be equipped with multiple
wireless interfaces, which can support cooperative communications for concurrent multipath transfer
(CMT) in VSNs. However, path heterogeneity and vehicle mobilitycauseCMT not to achieve the same
high transport efficiency recorded in wired nonmobile network environments. This paper proposes a
novel vehicular network-based CMT solution (VN-CMT) to address the above issues and improve
data delivery efficiency. VN-CMT is based on a CMT disorder analytic model which can effectively and
accurately evaluate the degree of out-of-order data. Based on this proposed model, a series of mechanisms
are introduced as follows: (1) a packet disorder-reducing retransmission policy to reduce retransmission delay; (2) a
path group selection algorithm to find the best path set for data multipath concurrent transfer; and (3) a
data scheduling mechanism to distribute data according to each path’s capacity. Simulation results show
how VN-CMT improves data delivery efficiency in comparison with an existing state-of-the-art solution.
